Thread-cop.



A. N. CHARTIER.

THREAD GOP.

APPLIUATION FILED JULY 16,1912.

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. ing what is .ARTHUR N. CHATIEB, 0B." DORCRESTEB, MASSACHUSETTS.

Specification of Letters Patent.

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Patented July 8, 1913.

Application- Med July 1B, 1919. Serial )ToA 709,880.

To all whom It may concern:

Be it known that I, ARTHUR N. CHARTIER, a citizen of the United States,residing at Dorchester, in the county of Suffolk and State ofMassachusetts, have invented certain new and usefulv Improvements inThread-Cops; and I doghereby declare the following to be `a full, clear,and exact description of the invention, such as will enable othersskilled to the art to which it appertains to make and use the same.

The present invention relates to thread cops, and more particularly tothat type of thread cop which is wound with a hard' thread and used inconnection with high speed sewin machines of various types.y

More or Iess difficulty has been experienced in winding cops for thischaracter of work which' are both inexpensive to manufacture and lfromwhich the thread may be delivered at high speed without snarling orotherwise catching. In one type of cop at resent used, a spool havingtwo tapered iieads is provided and the thread body is 'woundvthereon ina series of overlying layers gradually increasing in length, the various coils of thread lying substantially parallel to one another. This isknown as the plain type of winding and if the surface lot the spool isirregular in contour or the thread is wound without suffcient tension,the outer coils of thread are forced down between the adjacent coilsbeneath, causing the thread to catch or snarl when it is drawn from thespool. In another type of cop -which `is largely used, the thread bodyis wound upon a cylindrical tube or core in a series of overlyinglayers, each consisting of a plurality of spiral coils of threadarranged obliquely to the coils next beneath and formknown as auniversal winding. `When winding this type of cop, the thread istraversed automatically lengthwise of the spool, once for each two orthree 'rotations of the core and each of the overlying layers is thesame thread cop having flat ends is formed and as the thread isdelivered from the cop supported in a vertical position, the upper endmustbe left unprotectedlin order to allow the thread to be properlydelivered by the cop. On account of the lack of protection for this end,the coils of thread not only become dirty, but are often loosened andsnarled by objects with which they come in contact. From the above, itwill be seen `in thenP preferred form;

length. Thus a cylinfllricalrV that thel first form of cop is readilysusceptible to faults in the manufacture, which render it' unfit for usewhen the thread is to be delivered at high speed, and with the secondform large quant-ities of thread are often Wasted owing to the slippingot the coils and consequent snarling when the cop is lying aro-und andnot in use.

The object of the present invention isl to provide a thread cop for thistype of work aving a protected thread body whichy may be woundinexpensively and in which the uniform delivery of the thread willnot beaffected by imperfections in the core or Winding.

With this object in view, the various teatures o the invention consistsin certain novel features of construction, combinations and'arrangements o parts hereinafter described: and claimed, the advantagesot' which will' be obvious to those skilled in the art from thefollowing description.

In the accompanying drawings illustrating the preferred form of theinvention; Figure 1 represents an elevation'- oft a thread cop embodyingthe features of the invention and Fig. 2 is a longitudinal section inelevation of the cop shown in Fig. l.

It is a desirable requisite in thread copsof this character that thethread bodry shall be wound in such a manner that im perec- .tions inthe contour of the spool or the windshall not affect the uniformdelivery o'f the thread from the cop. It is further desirable that thethread body shall bc pro tected when wound upon the core to prevent theloosening and snarling of the cuter coils by contact with other objectswhen the Vthread cop is not in use.

The thread cop shown 1n the illustrated embodiment of the inventioncomprises a cylindrical core or tube l, having a tapered head 2supported upon one end and a .thread body indicated 'at 3 wound upon thecore 1.

4The core may consist of any suitable material but it is preferred tomake it in the form of a paper tube having the wooden head 2 secured toone end. In the present invention the universal winding is employedwhich winding consists, as stated previously, `.of successive overlyinglayers of threadg'of uniform length, each layer being made up of aplurality of coils wound spirally from end to end oi the cop-and posilostioned obliquely to the coils next beneath.

In order to cause the upper end of the thread body to lie closely to thehead2, the spool is fed lengthwise after each layer has been wound, thuscausing the thread body to be built with a cup-shaped upper endconforming to the taper of the head,as shown clearly in F ig.l 2; Thisforms a threadbody made up of a plurality of overlying cylindricallayers having one end tapered, and the opposite end, from which'thethread is drawn, cup-shaped to closely embrace the tapered head of thecop. In order to protect the tapered end of the thread body after it hasbeen wound, a detachable head 4 having a cylindrical outer surface and atapered recess conforming to the tapered end of the thread body issecured to the end of the tube 1. Thus after the cop is wound, thevopposite ends of the thread body are protected by the heads 2 and 4, andthe thread is delivered without catching or snarling from the upper endof the cop, as shown in Fig. 2. For this type of Work a hard threadhaving a smooth silky finish is employed and as this thread isexceedingly wiry the coils become very easily loosened from the threadbody, and if not prevented, are liable to slip down and catch betweenthe lower portion of the7 thread body and the head 4. To prevent this,the inner tapered surface of the head 4 is faced with a layer ofcompressible material 5 which presses against the thread body when thehead is in place and prevents the entrance of the loose coils of threadbetween the body and the head.

Tn operation, the thread cop is supported vertically, as shown in thedrawing, and the thread is delivered from theupper end, the dtaperedhead 2 enabling the thread to be paid out without catching upon the headand the universal winding preventing the catching or snarling of theouter coil of thread between adjacent coils underneath.l

When the lthread cop is not in use, the thread body is protected by theheads 2 and 4, the outer surfaces of which are substantially-flush withthe surface of the thread body when the cop is full, thus preventing theloosening of thei outer coils by contact with exterior objects.

While it is preferred to employ the spei,ofce,aee

cific construction and arrangement of parts a tapered head upon the endfrom which the thread is drawn, a .t thread body wound .thereon andconsisting of a plurality of layers of uniform length wound universally,each succeedinglayer being spaced lengthwise of the core, and a headsupported upon the opposite end of the core land inclosing the taperedend of the thread body.

2. A thread cop comprising a corehav'ing a tapered head upon one end, athread body lwound thereon consisting of a series of cylindrical layersof uniform length Iwound universally, each succeeding vlayer beingspaced lengthwise and the outer layer having its surface substantiallyiush with the outer edge of the `tapered head.

\ 3. A thread cop comprising a core, a tapered head supported upon theend of the,

core from which the thread is drawn, a thread body wound thereonconsisting of a series of cylindrical layers of uniform length, eachsucceeding layer being spaced lengthwise of the core, and a head securedto the opposite end of the core and having a l tapered recess fittingthe tapered endv of the' thread body.

4L. A thread cop comprising a core having a tapered head upon one end, athread body wound thereon consisting of a series of layers of uniformlength, each succeeding layer being spaced lengthwise, a head secured tothe opposite end of t-he core and having a tapered recess, and a layerof compressible material secured in the tapered recess and engagingwiththe lower end of the thread body.L

ARTHUR N. CHARTIER.

Witnesses BURTON W. CARY,

MABEI. ACKRorD.

